Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September registers as the month with the highest average temperatures, reaching 30.1°C (86.2°F) at its peak and 26.5°C (79.7°F) at the lowest.Heat index
The average heat index in September is evaluated at a very hot 37°C (98.6°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Brazil, the average relative humidity in September is 77%.Rainfall
In Brazil, in September, it is raining for 19.9 days, with typically 78mm (3.07") of accumulated precipitation. Throughout the year, in Brazil, there are 194.8 rainfall days, and 640mm (25.2") of precipitation is accumulated.Daylight
In Brazil, the average length of the day in September is 12h and 11min.On the first day of September in Brazil, Trinidad and Tobago, sunrise is at 05:55 and sunset at 18:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:55 AST.
Sunshine
In September, the average sunshine is 11h.UV index
The months with the highest UV index in Brazil are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Brazil. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest in Brazil?
How hot does it get in Brazil in September?
What is the average humidity in September in Brazil?
How much does it rain in Brazil in September?
What is the average length of the day in September in Brazil?
When is the sunrise / sunset in September in Brazil?
How long on average sun shines in September in Brazil?
What is the month with the highest UV index in Brazil?
When is the lowest UV index in Brazil?
What is the UV index intensity in September in Brazil?
Average temperature in September
Brazil, Trinidad and Tobago
- Average high temperature in September: 30.1°C
The warmest month (with the highest average high temperature) is September (30.1°C).
The month with the lowest average high temperature is January (27.9°C).
- Average low temperature in September: 26.5°C
The month with the highest average low temperature is October (26.6°C).
The coldest months (with the lowest average low temperature) are January and February (24.8°C).
Average pressure in September
Brazil, Trinidad and Tobago
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Brazil, Trinidad and Tobago
- Average wind speed in September: 13.7km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is August (13.6km/h).
Average humidity in September
Brazil, Trinidad and Tobago
- Average humidity in September: 77%
The month with the highest relative humidity is July (79%).
The months with the lowest relative humidity are February, March and April (75%).
Average rainfall in September
Brazil, Trinidad and Tobago
- Average rainfall in September: 78mm
The wettest month (with the highest rainfall) is October (115mm).
The driest month (with the least rainfall) is February (14mm).
Average rainfall days in September
Brazil, Trinidad and Tobago
- Average rainfall days in September: 19.9 days
The month with the highest number of rainy days is August (22.2 days).
The months with the least rainy days are February and April (10.3 days).
Average daylight in September /
Average sunshine in September
Brazil, Trinidad and Tobago
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Brazil, Trinidad and Tobago
- Average sunshine days in September: 7.4 days
The months with the most sunshine days are March and April (15.9 days).
The month with the least sunshine days is August (6.8 days).
Average UV index in September
Brazil, Trinidad and Tobago
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Brazil, Trinidad and Tobago
- Average cloud cover in September: 27
The month with the most cloud cover is June (Cloud cover 40).
The month with the least cloud cover is September (Cloud cover 27).
Average visibility in September
Brazil, Trinidad and Tobago
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
